/********************************** (C) COPYRIGHT *******************************
 * File Name          : main.c
 * Author             : WCH
 * Version            : V1.0.0
 * Date               : 2019/10/15
 * Description        : Main program body.
 *********************************************************************************
 * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
 * Attention: This software (modified or not) and binary are used for 
 * microcontroller manufactured by Nanjing Qinheng Microelectronics.
 *******************************************************************************/

/*
 *@Note
 *Automatic injection mode routine:
 *ADC channel 2 (PA2) - regular group channel, channel 3 (PA3) - injection group channel
 *
*/

#include "debug.h"

/* Global Variable */
s16 Calibrattion_Val = 0;


/*********************************************************************
 * @fn      ADC_Function_Init
 *
 * @brief   Initializes ADC collection.
 *
 * @return  none
 */
void ADC_Function_Init( void )
{
    ADC_InitTypeDef ADC_InitStructure = {0};
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA, ENABLE );
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, ENABLE );
    RCC_ADCCLKConfig( RCC_PCLK2_Div8 );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init( GPIOA, &GPIO_InitStructure );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init( GPIOA, &GPIO_InitStructure );

    ADC_DeInit( ADC1 );
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_Init( ADC1, &ADC_InitStructure );

    ADC_RegularChannelConfig( ADC1, ADC_Channel_2, 1, ADC_SampleTime_239Cycles5 );
    ADC_InjectedChannelConfig( ADC1, ADC_Channel_3, 1, ADC_SampleTime_239Cycles5 );
    ADC_AutoInjectedConvCmd( ADC1, ENABLE );
    ADC_Cmd( ADC1, ENABLE );

    ADC_ResetCalibration( ADC1 );
    while( ADC_GetResetCalibrationStatus( ADC1 ) );
    ADC_StartCalibration( ADC1 );
    while( ADC_GetCalibrationStatus( ADC1 ) );
    Calibrattion_Val = Get_CalibrationValue( ADC1 );
}

/*********************************************************************
 * @fn      Get_ADC_Val
 *
 * @brief   Returns ADCx conversion result data.
 *
 * @param   ch - ADC channel.
 *            ADC_Channel_0 - ADC Channel0 selected.
 *            ADC_Channel_1 - ADC Channel1 selected.
 *            ADC_Channel_2 - ADC Channel2 selected.
 *            ADC_Channel_3 - ADC Channel3 selected.
 *            ADC_Channel_4 - ADC Channel4 selected.
 *            ADC_Channel_5 - ADC Channel5 selected.
 *            ADC_Channel_6 - ADC Channel6 selected.
 *            ADC_Channel_7 - ADC Channel7 selected.
 *            ADC_Channel_8 - ADC Channel8 selected.
 *            ADC_Channel_9 - ADC Channel9 selected.
 *            ADC_Channel_10 - ADC Channel10 selected.
 *            ADC_Channel_11 - ADC Channel11 selected.
 *            ADC_Channel_12 - ADC Channel12 selected.
 *            ADC_Channel_13 - ADC Channel13 selected.
 *            ADC_Channel_14 - ADC Channel14 selected.
 *            ADC_Channel_15 - ADC Channel15 selected.
 *            ADC_Channel_16 - ADC Channel16 selected.
 *            ADC_Channel_17 - ADC Channel17 selected.
 *
 * @return  none
 */
u16 Get_ADC_Val( u8 ch )
{
    u16 val;

    ADC_SoftwareStartConvCmd( ADC1, ENABLE );

    while( !ADC_GetFlagStatus( ADC1, ADC_FLAG_EOC ) );

    val = ADC_GetConversionValue( ADC1 );

    return val;
}

/*********************************************************************
 * @fn      Get_ConversionVal
 *
 * @brief   Get Conversion Value.
 *
 * @param   val - Sampling value
 *
 * @return  val+Calibrattion_Val - Conversion Value.
 */
u16 Get_ConversionVal( s16 val )
{
    if( ( val + Calibrattion_Val ) < 0 )
    {
        return 0;
    }
    if((Calibrattion_Val + val) > 4095||val==4095)
    {
        return 4095;
    }
    return ( val + Calibrattion_Val );
}

/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main( void )
{
    u16 adc_val;
    u16 adc_jval;

    SystemCoreClockUpdate();
    Delay_Init();
    USART_Printf_Init( 115200 );
    printf( "SystemClk:%d\r\n", SystemCoreClock );
    printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );

    ADC_Function_Init();
    printf( "CalibrattionValue:%d\n", Calibrattion_Val );

    while( 1 )
    {
        ADC_SoftwareStartConvCmd( ADC1, ENABLE );
        while( !ADC_GetFlagStatus( ADC1, ADC_FLAG_EOC ) );
			  while( !ADC_GetFlagStatus( ADC1, ADC_FLAG_JEOC ) );
        adc_val = ADC_GetConversionValue( ADC1 );
        adc_jval = ADC_GetInjectedConversionValue( ADC1, ADC_InjectedChannel_1 );
        Delay_Ms( 500 );
        printf( "val:%04d\r\n", Get_ConversionVal( adc_val ) );
        printf( "jval:%04d\r\n", Get_ConversionVal( adc_jval ) );
        Delay_Ms( 2 );
    }
}

